CMOS potentiostat for chemical sensing applications

Tao Luo, Hongyi Wang, Hongjiang Song, Jennifer Blain Christen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations


We demonstrate a CMOS (complementary metal oxide semiconductor) potentiostat chip fabricated in a standard 0.5 μm CMOS process to perform electrochemical analysis via cyclic voltammetry. This chip contains six independent channels for three electrode systems in electrochemical cells. Our low power circuit has been designed to drive electrochemical reactions in solution using class AB folded cascode amplifiers. The circuit operates with rail to rail input and output and has strong drive ability. We have shown the potentiostat chip is capable of performing cyclic voltammetry (CV) with both potassium ferricyanide and hexaammineruthenium chloride solutions. The chip is capable of differentiating both the composition and concentration of the solution. We compare our results with control experiments on a Gamry commercial electrochemical workstation and demonstrate they are consistent.

Original languageEnglish (US)
Title of host publicationIEEE SENSORS 2013 - Proceedings
PublisherIEEE Computer Society
ISBN (Print)9781467346405
StatePublished - 2013
Event12th IEEE SENSORS 2013 Conference - Baltimore, MD, United States
Duration: Nov 4 2013Nov 6 2013

Publication series

NameProceedings of IEEE Sensors


Other12th IEEE SENSORS 2013 Conference
Country/TerritoryUnited States
CityBaltimore, MD

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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